Picking up on a comment you made Shutter, I don't think these grids are 20 feet wide either. I think they may be about 14-15 feet wide in some cases? Because if you assume the grids are 20ft wide then all other dimensions are off ... no matter whose photos (including Tom's) you try to use to make measurements on. I think my scale on the KIRO vid frames which assumes the grids are 20ft wide is totally wrong, as per Dorwin and Kaye.
Tom has the below on his website and if I'm reading it right he is using tire tracks as a "calibration" scale for distance? God only knows what that dimension is because Tom doesn't state it. So assuming one of the people in the photo is about six feet high I tried to extract other dimensions, as shown, and I have zero confidence in that!
In addition Tom shows a 20ft scale on his overlay. When applied to the grids the grids average only 11 feet wide!
Earlier we used the buildings on the Fazio property as correct dimensions. That may be the only thing we can use as a known-true dimension for evaluating USGS beach photos etc. Those buildings provide a true known scale which can be applied to everything else. Until that happens I am holding Dorwin and Kaye's claim that the grids were 20 feet wide in reserve, because for one thing no two grid sections are the same dimension!
Hopfully this corrected post will now go?